In this video the iPhone 6 only best the galaxy s5 in the front facing camera. The galaxy obviously beat the iPhone in the rear facing camera. I hate that too. He said the galaxy s5 has a 12mp camera.
Front facing camera picture was much much better on iPhone 6. Video (outdoor) was a bit better on iPhone 6 (focus was slightly faster). It's hard to judge the color accuracy in those videos without knowing what the true colors really are. Indoors, auto focus speed was close, maybe a bit faster on iPhone 6 on averege. The galaxy s5 seemed to be a bit brighter indoors.
Outdoor pictures... iPhone 6 wins (you can crop more on s5 though)
Indoor pictures ... iPhone 6 wins as well (colors seemed more natural, although again, hard to say without actually seeing the real deal. Extreme low light was sharper on 6).
Flash picture... a bit more contrast on s5 picture, but sharper image on iPhone 6. Also, picturing anything else with a flash will be better on iPhone 6, in term of color accuracy.
Sound... much better on s5
PS
I wonder if the iPhone 6 low light video could be a bit brighter though. iPhone 5s seemed to be noticeably dimmer in low light video recording compared to iPhone 5 (I have no idea why that was, because everything is better on 5s camera


).